6438834404 has 12 divisors (see below), whose sum is σ = 11270522928. Its totient is φ = 3218685000.

The previous prime is 6438834401. The next prime is 6438834497. The reversal of 6438834404 is 4044388346.

It is not an unprimeable number, because it can be changed into a prime (6438834401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163022 + ... + 198629.

It is an arithmetic number, because the mean of its divisors is an integer number (939210244).

Almost surely, 2^6438834404 is an apocalyptic number.

It is an amenable number.

6438834404 is a deficient number, since it is larger than the sum of its proper divisors (4831688524).

6438834404 is a wasteful number, since it uses less digits than its factorization.

6438834404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366106 (or 366104 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 44.

The square root of 6438834404 is about 80242.3479467046. The cubic root of 6438834404 is about 1860.3832412598.

The spelling of 6438834404 in words is "six billion, four hundred thirty-eight million, eight hundred thirty-four thousand, four hundred four".